使用Groovy代碼執行本地作業系統指令的方法

看個例子，我在Groovy項目檔案夾所在目錄執行dir，得到如下輸出：

Found text  Volume in drive C is OSDisk
 Volume Serial Number is 4C6D-47B0

 Directory of C:\Users\i042416\eclipse-workspace\test222

06/22/2020  07:26 PM    <DIR>          .
06/22/2020  07:26 PM    <DIR>          ..
06/22/2020  07:26 PM               494 .classpath
06/22/2020  07:26 PM               426 .project
06/22/2020  07:26 PM    <DIR>          .settings
06/24/2020  09:10 AM    <DIR>          bin
06/22/2020  07:28 PM    <DIR>          src
               2 File(s)            920 bytes
               5 Dir(s)  341,255,667,712 bytes free